Theory of Machine Which of the following would constitute a link? Piston rod and cross head Piston, piston rod and cross head Piston, crank pin and crank shaft Piston and piston rod Piston rod and cross head Piston, piston rod and cross head Piston, crank pin and crank shaft Piston and piston rod ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The relation between the controlling force (Fc) and radius of rotation (r) for a stable spring controlled governor is Fc = a/r + b Fc = ar Fc = ar - b Fc = ar + b Fc = a/r + b Fc = ar Fc = ar - b Fc = ar + b ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which one of the following is an exact straight line mechanism using lower pairs? Robert’s mechanism Grasshopper mechanism Peaucellier’s mechanism Watt’s mechanism Robert’s mechanism Grasshopper mechanism Peaucellier’s mechanism Watt’s mechanism ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The condition for correct steering of a Davis steering gear is (where α = Angle of inclination of the links to the vertical) tanα = c/2b sinα = b/c cotα = c/2b cosα = c/b tanα = c/2b sinα = b/c cotα = c/2b cosα = c/b ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located at a distance of 2 mm from the axis of the shaft. When the shaft is allowed to vibrate in its natural bow-shaped mode, it has a frequency of vibration of 10 rad/s. When the shaft is rotated at 300 r.p.m., it will whirl with a radius of 2.22 mm 2 mm 3.0 mm 2.50 mm 2.22 mm 2 mm 3.0 mm 2.50 mm ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The total acceleration of B with respect to A will be equal to Vector sum of radial component and Coriolis component Vector difference of radial component and tangential component Vector sum of tangential component and Coriolis component Vector sum of radial component and tangential component Vector sum of radial component and Coriolis component Vector difference of radial component and tangential component Vector sum of tangential component and Coriolis component Vector sum of radial component and tangential component ANSWER DOWNLOAD EXAMIANS APP
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